RAK 901 WisBlock Temperature and Humidity Sensor User guide

Brand: RAK

Model: 901 WisBlock Temperature and Humidity Sensor

Type: User guide

This manual is also suitable for

1901 WisBlock Temperature and Humidity Sensor

RAK 901 WisBlock Temperature and Humidity Sensor is a compact and versatile sensor that can be used to measure and monitor environmental temperature and humidity. This sensor is designed for easy integration with WisBlock Base and WisBlock Core, enabling users to quickly build environmental data acquisition systems.

With its I2C communication interface, the RAK 901 sensor can be easily connected to the WisBlock Base and programmed using the Arduino IDE. The sensor is compatible with various WisBlock Core modules, including RAK4631, RAK11200, and RAK11310.

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RAK1901 Quick Start Guide

Prerequisite

What Do You Need?

Before going through each and every step on using the RAK1901 WisBlock module, make sure to prepare the

necessary items listed below:

Hardware

RAK1901 WisBlock Temperature & Humidity Sensor

Your choice of WisBlock Base

Your choice of WisBlock Core

USB Cable

Li-Ion/LiPo battery (optional)

Solar charger (optional)

Software

Arduino

Download and install ArduinoIDE .

To add the RAKwireless Core boards on your Arduino Boards Manager, install the RAKwireless Arduino BSP

Product Configuration

Hardware Setup

WisBlock can integrate this module which makes it easy to build up an environmental temperature and humidity

data acquisition system.

For more information about the RAK1901, refer to the Datasheet.

The RAK1901 module gives information about:

Environment Temperature

Environment Humidity

RAK1901 module can be connected to any slot of WisBlock Base to communicate with the WisBlock Core. It will

work on SLOT A to D. Also, always secure the connection of the WisBlock module by using the compatible

screws.

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Figure 1: RAK1901 connection to WisBlock Base

Assembling and Disassembling of WisBlock Modules

Assembling

As shown in Figure 2, the location for Slot A, B, C, and D are properly marked by silkscreen. Follow carefully the

procedure defined in RAK5005-O module assembly/disassembly instructions to attach a WisBlock module.

Once attached, carefully fix the module with one or more pieces of M1.2 x 3 mm screws depending on the module.

Figure 2: RAK1901 connection to WisBlock Base

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Disassembling

The procedure in disassembling any type of WisBlock modules is the same.

1. First, remove the screws.

Figure 3: Removing screws from the WisBlock module

2. Once the screws are removed, check the silkscreen of the module to find the correct location where force can

be applied.

Figure 4: Detaching silkscreen on the WisBlock module

3. Apply force to the module at the position of the connector, as shown in Figure 5, to detach the module from the

baseboard.

Figure 5: Applying even forces on the proper location of a WisBlock module

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NOTE

If you will connect other modules to the remaining WisBlock Base slots, check on the WisBlock Pin

Mapper tool for possible conflicts. RAK1901 uses I2C communication lines, and it can cause possible

conflict especially on some IO modules.

After all this setup, you can now connect the battery and USB cable to start programming your WisBlock Core.

Software Configuration and Example

The RAK1901 is a Temperature & Humidity sensor board that contains the SHTC3 chip. The SHTC3 is a digital

temperature and humidity sensor designed especially for battery-driven high-volume consumer electronics

applications. The device comprises a sensing element and an IC interface which communicates through I2C from

the sensing element to the application.

These are the quick links that go directly to the software guide for the specific WisBlock Core module you use:

RAK1901 in RAK4631 WisBlock Core Guide

RAK1901 in RAK11200 WisBlock Core Guide

RAK1901 in RAK11310 WisBlock Core Guide

LoRaWAN Weather Monitoring with RAK1901

RAK1901 in RAK4631 WisBlock Core Guide

If you already installed the RAKwireless Arduino BSP , the WisBlock Core and example code should now be

available on the Arduino IDE.

1. First, you need to select the RAK4631 WisBlock Core.

Figure 6: Selecting RAK4631 as WisBlock Core

2. The Basic Sample Code for RAK1901 in Github will work on all WisBlock Core. You can open the example

codes depending on your WisBlock Core, as shown in Figure 7.

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Figure 7: Opening RAK1901 example code for RAK4631 WisBlock Core

3. Once the example code is open, install the SparkFun SHTC3 library by clicking the yellow highlighted link, as

shown in Figure 8.

Figure 8: Accessing the library used for RAK1901 Module

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Figure 9: Installing the compatible library for RAK1901 Module

4. After successful installation of the library, you can now select the right serial port and upload the code, as shown

in Figure 10 and Figure 11.

Figure 10: Selecting the correct Serial Port

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Figure 11: Uploading the RAK1901 example code

5. When you successfully uploaded the example sketch, open the Serial Monitor of the Arduino IDE to see the

sensor's reading logs. If you see the logs, as shown in Figure 12, then your RAK1901 is properly

communicating to the WisBlock core.

Figure 12: RAK1901 temperature and humidity data logs

RAK1901 in RAK11200 WisBlock Core Guide

If you already installed the RAKwireless Arduino BSP , the WisBlock Core and example code should now be

available on the Arduino IDE.

1. First, you need to select the RAK11200 WisBlock Core.

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Figure 13: Selecting RAK11200 as WisBlock Core

2. The Basic Sample Code for RAK1901 in Github will work on all WisBlock Core. You can open the example

codes depending on your WisBlock Core, as shown in Figure 14.

Figure 14: Opening RAK1901 example code for RAK11200 WisBlock Core

3. Once the example code is open, install the SparkFun SHTC3 library by clicking the yellow highlighted link, as

shown in Figure 15.

Documentation Center

Figure 15: Accessing the library used for RAK1901 Module

Figure 16: Installing the compatible library for RAK1901 Module

4. After successful installation of the library, you can now select the right serial port and upload the code, as shown

in Figure 17 and Figure 18.

NOTE

RAK11200 requires Boot0 pin to be configured properly first before uploading. If not done properly,

uploading the source code to RAK11200 will fail. Check the full details on the RAK11200 Quick Start

Guide .

Documentation Center

Figure 17: Selecting the correct Serial Port

Figure 18: Uploading the RAK1901 example code

5. When you successfully uploaded the example sketch, open the Serial Monitor of the Arduino IDE to see the

sensor's reading logs. If you see the logs, as shown in Figure 19, then your RAK1901 is properly

communicating to the WisBlock core.

Documentation Center

Figure 19: RAK1901 temperature and humidity data logs

RAK1901 in RAK11310 WisBlock Core Guide

If you already installed the RAKwireless Arduino BSP , the WisBlock Core and example code should now be

available on the Arduino IDE.

1. First, you need to select the RAK11310 WisBlock Core.

Figure 20: Selecting RAK11310 as WisBlock Core

2. The Basic Sample Code for RAK1901 in Github will work on all WisBlock Core. You can open the example

codes depending on your WisBlock Core, as shown in Figure 21.

Documentation Center

Figure 21: Opening RAK1901 example code for RAK11310 WisBlock Core

3. Once the example code is open, install the SparkFun SHTC3 library by clicking the yellow highlighted link, as

shown in Figure 22.

Figure 22: Accessing the library used for RAK1901 Module

Documentation Center

Figure 23: Installing the compatible library for RAK1901 Module

4. After successful installation of the library, you can now select the right serial port and upload the code, as shown

in Figure 24 and Figure 25.

Figure 24: Selecting the correct Serial Port

Documentation Center

Figure 25: Uploading the RAK1901 example code

5. When you successfully uploaded the example sketch, open the Serial Monitor of the Arduino IDE to see the

sensor's reading logs. If you see the logs, as shown in Figure 26, then your RAK1901 is properly

communicating to the WisBlock core.

Figure 26: RAK1901 temperature and humidity data logs

LoRaWAN Weather Monitoring with RAK1901

For WisBlock Core RAK4630, it has an example for LoRaWAN Weather Monitoring with RAK1901 Temperature

& Humidity Module.

Documentation Center

Figure 27: LoRaWAN Weather Monitoring example

Last Updated: 11/9/2021, 9:31:12 AM

RAK 901 WisBlock Temperature and Humidity Sensor User guide

Brand: RAK

Model: 901 WisBlock Temperature and Humidity Sensor

Type: User guide

This manual is also suitable for

1901 WisBlock Temperature and Humidity Sensor

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RAK 901 WisBlock Temperature and Humidity Sensor User guide

This manual is also suitable for

RAK 901 WisBlock Temperature and Humidity Sensor User guide

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